2021 Chevrolet Tahoe
The 2021 Chevrolet Tahoe is sold in the U.S. as a gas and diesel large SUV with 10 EPA-rated configurations. The most efficient version, the Tahoe 2WD, is EPA-rated at 24 mpg combined. NHTSA lists 16 recall campaigns for this model year, 1 rated critical, which gives it a Safety Signal grade of F. Owners have filed 460 complaints, most often about the engine. NHTSA crash-tested it at 4 stars overall.

Specs & fuel economy
Source: EPA fueleconomy.gov| Configuration | Powertrain | Drive | Engine / motor | City | Hwy | Comb | Annual fuel* |
|---|---|---|---|---|---|---|---|
| Tahoe 2WD | Gas | RWD | 5.3L 8-cyl | 16 | 20 | 18 | $3,700 |
| Tahoe 4WD | Gas | 4WD | 5.3L 8-cyl | 16 | 20 | 18 | $3,700 |
| Tahoe 2WD | Gas | RWD | 6.2L 8-cyl | 15 | 20 | 17 | $4,850 |
| Tahoe 2WD | Gas | RWD | 5.3L 8-cyl | 15 | 20 | 17 | $3,950 |
| Tahoe 4WD | Gas | 4WD | 5.3L 8-cyl | 15 | 20 | 17 | $3,950 |
| Tahoe 2WD | Gas | RWD | 6.2L 8-cyl | 14 | 20 | 16 | $5,150 |
| Tahoe 4WD | Gas | 4WD | 6.2L 8-cyl | 14 | 19 | 16 | $5,150 |
| Tahoe 4WD | Gas | 4WD | 6.2L 8-cyl | 13 | 19 | 16 | $5,150 |
| Tahoe 2WD | Diesel | RWD | 3.0L 6-cyl turbo | 21 | 28 | 24 | $4,000 |
| Tahoe 4WD | Diesel | 4WD | 3.0L 6-cyl turbo | 20 | 26 | 22 | $4,350 |
*EPA estimate at 15,000 miles/year at EPA reference fuel and electricity prices. fueleconomy.gov record ids: 42619, 42628, 42617, 44036, 44045, 44034, 42626, 44043, 43493, 43595.
Emissions & certification
Source: EPA emission certificates| Configuration | Smog rating | Emission standard | Where it can be sold new | SmartWay |
|---|---|---|---|---|
| Tahoe 2WD, Tahoe 4WD | 5 / 10 | California LEV-III ULEV70 / Federal Tier 3 Bin 70 | All 50 states (federal, all altitudes); California and states following California standards | — |
| Tahoe 2WD, Tahoe 4WD | 3 / 10 | California LEV-III ULEV125 / Federal Tier 3 Bin 125 | All 50 states (federal, all altitudes); California and states following California standards | — |
Certified for all fifty states, so it can be registered new anywhere in the U.S.
The smog rating scores tailpipe pollutants other than greenhouse gases, 1 (worst) to 10 (best), and is comparable only within a model year. The standard is the federal bin or California tier the configuration was certified to. Both come from the EPA certificate behind the window sticker.
Specifications filed with NHTSA
Source: NHTSA vPICDimensions Exterior
| Body style | Sport Utility Vehicle [SUV]/Multipurpose Vehicle [MPV] |
| Doors | 4 |
| GVWR class | Class 2F: 7,001 - 8,000 lb (3,175 - 3,629 kg) |
Engine Basics
| Cylinders | 8 |
| Displacement | 5.3 L |
| Engine configuration | V-Shaped |
Fuel Economy
| Fuel | Gasoline |
Seating
| Seat rows | 3 |
| Seating capacity | 8 seats |
Transmission
| Drivetrain | 4x2 |
| Transmission | Automatic |
| Transmission speeds | 10 |
Driver assistance
Standard: Anti-lock brakes, Backup camera, Blind-spot monitoring, Electronic stability control, Forward collision warning, Lane departure warning, Lane keeping assist, Parking assist, Pedestrian automatic emergency braking, Rear cross-traffic alert
Optional: Adaptive cruise control
Filed by the manufacturer with NHTSA under the federal vehicle-identification rule and decoded from the VIN pattern — not a manufacturer press kit, so it describes the configurations we could identify rather than every trim (seen: High Country, LT, Premier, RST). Figures for the trim you are looking at may differ.
Dimensions & weight
Source: Transport Canada| Length | 210.6 in |
| Width (body, without mirrors) | 81.1 in |
| Height | 75.6 in |
| Wheelbase | 120.9 in |
| Track, front | 68.5 in |
| Track, rear | 68.1 in |
| Curb weight | 5,355–5,545 lb |
| Weight distribution, front/rear | 51/49 to 52/48 |
Measured by Transport Canada for its Canadian Vehicle Specifications database, which covers the North American versions of each model — here 2 configurations: 4-door SUV AWD, 4-door SUV RWD. Where a range is shown, those versions differ. Width is the body without mirrors, which is why it can read narrower than a brochure figure. Before we used it we checked it against the US manufacturer press kits we hold (27 Sep 2026): wheelbase agreed within 1% on every vehicle we could compare, length on 98%, and the curb weight fell inside the manufacturer's range on 96%. Source dataset. Contains information licensed under the Open Government Licence – Canada. Licence.
Factory warranty running out?
The 2021 Chevrolet Tahoe is in the years where transmission, electronics and drivetrain repairs land on the owner. What an extended plan does and does not cover is worth reading before a dealer quotes you one.
What to check before you buy →Affiliate disclosure: some links on this page are affiliate links. If you request a quote or buy through them we may earn a commission at no extra cost to you. Nothing on this page changes because of it.
Recalls (16)
Source: NHTSA recall databaseEngine And Engine Cooling
N252494000Power Train
N242454440Exterior Lighting
N222382220Seat Belts
N222372380Power Train
N212351030Fuel System, Gasoline
N212332040Service Brakes, Hydraulic
N212340970Steering
N212333900Electrical System
N212338110Seat Belts
N212329320Seat Belts
N202313000Fuel System, Gasoline
N212327720Seat Belts
N202322230Seat Belts
N202314670Seats
N202312720These are vehicle campaigns — the ones the automaker filed against this model. NHTSA also records equipment recalls, filed by a parts maker against a component (a tyre, a child seat, an aftermarket part), and those are not listed here or counted above. nhtsa.gov/recalls shows both for a VIN.
NHTSA defect investigations
Engine — Loss of motive power due to engine failure post recall remedy open
On January 16, 2026, the Office of Defects Investigation (ODI) opened Recall Query RQ26001. This investigation was opened to assess the remedy effectiveness of Recall 25V-274. ODI has received complaints alleging engine failure in vehicles after the recall remedy had been completed, whether that remedy involved an oil viscosity change or a complete engine replacement. General Motors (GM) issued Recall 25V-274 to address concerns of engine failure in the L87 engines produced between March 1, 2021 and May 31, 2024. GM cited the root cause as a supplier manufacturing and quality issue. GM’s recall remedy for Recall 25V-274 consisted of two different repairs, either an oil viscosity change or a
Opened Aug 20, 2026 · action EA26005 · the investigation’s page →
Engine — Loss of motive power due to engine failure post recall remedy closed
On January 16, 2026, the Office of Defects Investigation (ODI) opened Recall Query RQ26001. This investigation was opened to assess the remedy effectiveness of Recall 25V-274. ODI has received complaints alleging engine failure in vehicles after the recall remedy had been completed, whether that remedy involved an oil viscosity change or a complete engine replacement. General Motors (GM) issued Recall 25V-274 to address concerns of engine failure in the L87 engines produced between March 1, 2021 and May 31, 2024. GM cited the root cause as a supplier manufacturing and quality issue. GM’s recall remedy for Recall 25V-274 consisted of two different repairs, either an oil viscosity change or a
Opened Jan 16, 2026 · closed Aug 20, 2026 · action RQ26001 · the investigation’s page →
Engine — Loss of motive power due to engine failure open
The Office of Defects Investigation (ODI) has received 1,157 reports of engine bearing failure failures in the L87 6.2L engine produced by General Motors (GM). Of the 1,157 reports received, 173 are outside of the scope of recall 25V-274. These engines are installed in Model Years (MY) 2019–2024 Chevrolet Silverado 1500 and GMC Sierra 1500, and 2021-2024MY Chevrolet Suburban and Tahoe, GMC Yukon/Yukon XL, and Cadillac Escalade/Escalade ESV vehicles. The subject engine failures were investigated as part of a Preliminary Evaluation (PE25001). GM determined that these engine failures were due to multiple supplier manufacturing and quality issues. GM issued recall 25V-274 to address the supplie
Opened Oct 23, 2025 · action EA25007 · the investigation’s page →
Engine — Loss of motive power due to engine failure closed
On January 16, 2025, the Office of Defects Investigation (ODI) opened Preliminary Evaluation PE25001 after receiving complaints and field reports concerning engine failures in MY2019-2024 GM’s full-size truck and SUV T1XX platform equipped with the L87 6.2L V8 engine. These complainants alleged engine bearing failures resulting in knocking and growling noises from the engine’s bottom end and in some cases more severe consequences such as broken connecting rods leading to engine damage, or engine failure. If the engine fails during vehicle operation, the vehicle will lose propulsion, increasing the risk of a crash. On April 24, 2025, GM issued recall 25V-274 to address the concern with L87 en
Opened Jan 16, 2025 · closed Oct 23, 2025 · action PE25001 · the investigation’s page →
Air Bags:Srs Malfunction Warning Lamp/Light — Air Bag Malfunction closed
On April 9, 2021, the Office of Defects Investigations (ODI) opened PE21-010 to investigate instances of air bag malfunction indicator light (MIL) illumination and potential for frontal air bag non-deployment in several vehicles manufactured by General Motors (GM). The vehicles included model year (MY) 2020 through 2021 CT4 and CT5 passenger cars, Sierra and Silverado trucks (1500/2500/3500 models), XT4 and MY 2021 Escalade, Suburban, Tahoe, Yukon SUVs. Technical Service Bulletin (TSB) 21-NA-005, issued in March 2021, addresses air bag MIL illumination with diagnostic trouble codes (DTCs) B0001-1B or B0012-0D. It cites rust particles in the connection terminal interface of the driver air bag
Opened Apr 9, 2021 · closed Aug 24, 2023 · action PE21010 · the investigation’s page →
Whether any of this applies to one specific Tahoe
A campaign covers a build range, not a model year, so two identical-looking cars from 2021 can differ. Both of these check a VIN against the manufacturer’s own list, free, in about ten seconds. Chevrolet publishes its own lookup because federal rule 49 CFR 573.15 requires it to, and to keep it current to within seven days.
Hear about a recall before the letter does
The manufacturer’s letter is the last step of a recall: it has up to 60 days after filing to mail owners, at the address on the registration. We email you the day NHTSA posts a recall on the 2021 Chevrolet Tahoe, with what to do next. Nothing else, ever — no newsletter, no marketing, one-click unsubscribe in every message.
Parts & accessories for the 2021 Chevrolet Tahoe
Search by fitment on eBay Motors — OEM take-offs, aftermarket, and the trim pieces dealers no longer stock. The listing and the price are the seller's.
Find parts for this Tahoe →Owner complaints
Source: NHTSA complaint database9 involved a crash · 3 a fire · 9 injuries · 0 deaths reported
34 per 10,000 built · Chevrolet reported 133,534 Tahoe built (its Early Warning production report to NHTSA)
Filed per year: 2020: 12 · 2021: 29 · 2022: 29 · 2023: 50 · 2024: 63 · 2025: 161 · 2026: 116
Most-cited components
In depth: engine problems → · fuel system problems → · transmission and drivetrain problems → · electrical problems →
In owners' own words
Filed with NHTSA by the people who own these cars, one per problem area. Quoted as written, with anything identifying removed.
2021 Chevy Tahoe/ Service Steering Column Lock contnues to message after each start.milage 900 miles. My concern is that steering failure could occur while in transit. Dealer was unable to resolve issue
We have owned this 2021 Chevrolet Tahoe for a little less than a year. Since acquiring this vehicle, there have been multiple safety recalls and we have had to get the vehicle serviced 3 times due to electrical issues. Now for the major safety issue, was out of town waiting at a red light in a turning lane.
On my way to work a few days ago I noticed a lag while driving and a knocking feeling/sound ever few seconds going highway speeds. No engine light came on to warn or tell of an issue. I thought maybe it was just a section of roadway that makes cars ride rough.
I had a incident almost tragedy yesterday inside my Tahoe , parked on my parents drive way. My kid 7 years old was inside truck playing and somehow he got belt tangled around his neck with car seat belt the one that hangs from roof used for car seat.
The contact owns a 2021 Chevrolet Tahoe. The contact stated that while driving at an undisclosed speed, the vehicle idled and loss power. The contact detected a smoke odor and smoke came inside the vehicle from the rear seats. The service ESC, traction control, forward collision, and engine warning lights were illuminated.
Since september 23, a 'service safety restraint system' warning light repeated comes on at the infotainment center along with the airbag warning light. The light comes on every few miles while driving, at any speed under any road condition
Complaint counts are raw owner reports to NHTSA, not verified defects, and scale with how many were sold. Use them to spot patterns, not to rank.
Reported by Chevrolet itself: 67 death-or-injury claims on this model year in its quarterly Early Warning reports to NHTSA (49 CFR 579.21): 2 killed, 97 injured, as claimed, not verified — about 50 per 100,000 built. Every Tahoe model year, by year and system → Dated and by system, they are exhibit F of the defect dossier.
When owners reported it
miles, typically
Half the 99 owner reports with an odometer reading on file fall between 14,000 and 70,000 miles. That is when problems get reported, which is not the same as when they start — and not a failure rate, because nobody knows how many of these cars never had a problem at all.
Median mileage by component
| Component | Reports | Median miles | Vs same age |
|---|---|---|---|
| Engine | 41 | 61,000 | 1.22× |
| Fuel/Propulsion System | 25 | 38,000 | 0.83× |
| Power Train | 15 | 62,000 | 1.26× |
Vs same age is this model year’s median for the system divided by the median of every 2021-model-year complaint about the same system, all makes: under 1× means owners of this car reported it at lower mileage. Which systems go early across the whole fleet: the component study.
Across 2018–2022 model years the Chevrolet Tahoe ranks 58 of 79 nameplates in the odometer-at-first-complaint study: owners reported problems at 1.5× the mileage of vehicles the same age (median 41,000 miles against a fleet 23,512).
Odometer readings as filed by owners with NHTSA. Readings under 100 or over 400,000 miles are dropped as data entry rather than history, and a component needs at least 12 readings before a median is shown for it.
Crash ratings
Source: NHTSA NCAP| Configuration | Overall | Frontal | Side | Rollover | Rollover risk |
|---|---|---|---|---|---|
| SUV 2WD | ★★★★☆ | ★★★★☆ | ★★★★★ | ★★★☆☆ | 21% |
| SUV 4WD | ★★★★☆ | ★★★★☆ | ★★★★★ | ★★★☆☆ | 22% |
NHTSA New Car Assessment Program. Standard driver-assist: forward collision warning, automatic emergency braking.
Service bulletins & campaigns
Source: NHTSA manufacturer communications- 15 years or 150,000 miles, whichever comes first · GM service campaign N262552620Certain vehicles may have a condition that could cause the cylinder 2 glow plug to fail.
- 10 years or 150,000 miles, whichever comes first · GM service campaign N252494003-02Certain vehicles listed above, may have a condition where the connecting rod and/or crankshaft engine components in these vehicles may have manufacturing defects that can lead to engine damage and…
- 10 years or 150,000 miles, whichever comes first · GM service campaign N252494003-01Certain vehicles listed above, may have a condition where the connecting rod and/or crankshaft engine components in these vehicles may have manufacturing defects that can lead to engine damage and…
- 10 years or 150,000 miles, whichever comes first · GM service campaign N252494003Certain vehicles listed above, may have a condition where the connecting rod and/or crankshaft engine components in these vehicles may have manufacturing defects that can lead to engine damage and…
- Term not in NHTSA’s summary · GM warranty extension 22-NA-244This warranty administration service bulletin provides information about GM Accessories - Dealer-Installed, Repaired or Replaced During Warranty Coverage Period.
- 15 years or 150,000 miles, whichever comes first · GM service campaign N242454441-02Certain vehicles listed above, may have a condition where the transmission control valve has worn, resulting in a gradual loss of pressure within the valve.
2 more in this page’s JSON.
The term and the vehicles it covers are the manufacturer’s, as NHTSA’s summary of each filing states them; a dealer checks one particular car by its VIN. Every GM warranty extension (33) → · Every warranty extension on file, all makes →
Most often about: Electrical System, Engine, Equipment, Unknown Or Other, Power Train.
- PIT6477D Service bulletin2026-10-05 · Unknown Or Other
- This preliminary PI was created to advise techniians in the field that they will not be able to perform a GDS automated bleed with the scan tool dues to a issue with the software in the scan tool
- PIT5698F Service bulletin2026-09-26 · Unknown Or Other
- This PI provides Diagnostics tips on how the LIN bus works and how to diagnosis it.
- PIT5801F Service bulletin2026-09-10 · Unknown Or Other
- This preliminary information communicates diagnostic tips for air leveling suspension system.
- PIP4902W Service bulletin2026-09-04 · Unknown Or Other
- This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
- PIT5869B Service bulletin2026-08-26 · Unknown Or Other
- This PI provides a diagnostic tip when fuse F4DR is opening and dealerships are to inspect the wiring at the center console lid.
- PIC6551C Service bulletin2026-08-20 · Unknown Or Other
- This Preliminary information communicates to dealer to perform a MEC reset for wireless projection issues
- PIT6446A Service bulletin2026-07-24 · Unknown Or Other
- This PI Communicates information to ensure Memory Recall is enabled to ensure memory mirrors return to set position after curbview assist is used.
- PIT5509N Service bulletin2026-07-21 · Unknown Or Other
- This PI provides diagnostic tips for diagnosing electric trailer brakes issues.
A service bulletin is the manufacturer telling its dealers how to diagnose or repair a known condition. It is not a recall, not a finding that the vehicle is defective, and the work is not automatically free — though a bulletin is often what a dealer works from when you describe a symptom, so quoting the document number can save a diagnosis. The count is every communication filed; the list shows the most recent, one entry per campaign, because a single campaign is usually filed as several documents on the same day. The summaries are NHTSA's; the full documents come from the manufacturer.
Diagnostic trouble codes on file
Source: NHTSA manufacturer communications and complaintsCodes documented against this model year in the federal record. A code appearing here does not mean this vehicle will set it — it means the code is part of this nameplate-year's documented history.
| Code | What it means | Most often filed under | Where it appears |
|---|---|---|---|
| B14DC B14DC on Chevrolet → | Manufacturer-defined — the meaning is set by the automaker, not the standard. | Air Bags | 28 bulletins · 1 owner report |
| P0300 P0300 on Chevrolet → | Misfire detected, but not isolated to one cylinder. | Engine · Ignition coils → | 18 bulletins · 3 owner reports |
| P0106 P0106 on Chevrolet → | The manifold pressure sensor reading does not track what the engine is doing. | Engine | 14 bulletins |
| P129F P129F on Chevrolet → | Manufacturer-defined — the meaning is set by the automaker, not the standard. | Fuel/Propulsion System · Fuel pump → | 7 bulletins · 6 owner reports |
| P12A6 P12A6 on Chevrolet → | Manufacturer-defined — the meaning is set by the automaker, not the standard. | Engine | 13 bulletins |
| B1A7A B1A7A on Chevrolet → | Manufacturer-defined — the meaning is set by the automaker, not the standard. | Electrical System · Battery → | 11 bulletins |
| P0506 P0506 on Chevrolet → | Manufacturer-defined — the meaning is set by the automaker, not the standard. | Engine · Throttle body → | 11 bulletins |
| U1121 U1121 on Chevrolet → | Manufacturer-defined — the meaning is set by the automaker, not the standard. | Electrical System · Battery → | 11 bulletins |
| U3000 U3000 on Chevrolet → | Manufacturer-defined — the meaning is set by the automaker, not the standard. | Electrical System · Battery → | 9 bulletins |
| C1197 C1197 on Chevrolet → | Manufacturer-defined — the meaning is set by the automaker, not the standard. | Suspension · Struts and shocks → | 8 bulletins |
| P023F P023F on Chevrolet → | Manufacturer-defined — the meaning is set by the automaker, not the standard. | Electrical System · Battery → | 7 bulletins · 1 owner report |
| P2714 P2714 on Chevrolet → | Manufacturer-defined — the meaning is set by the automaker, not the standard. | Unknown Or Other | 5 bulletins · 3 owner reports |
Generic codes (the second character is 0 or 2) mean the same thing on every vehicle sold in the United States. Manufacturer-specific codes (1 or 3) mean whatever the automaker assigned, and no honest source can define them for you — which is why the ones here carry the evidence instead of a definition. A code is a link when enough separate federal documents name it across the catalogue to be worth a page of its own; the rest are listed here, where the vehicle is the context that makes them mean something.
Affiliate disclosure: some links on this page are affiliate links. If you request a quote or buy through them we may earn a commission at no extra cost to you. Nothing on this page changes because of it.
At the New York inspection station
Source: New York State DMVIn New York’s inspection lanes over the 12 months to Oct 10, 2026, the 2021 Chevrolet Tahoe failed the emissions check on 4.1% of first inspections — higher than the 1.9% for every 2021 model-year vehicle inspected; and the safety inspection on 0.81% (every 2021 vehicle: 1.5%).
failed emissions
2,963 initial inspections of 2,895 vehicles.
| Measure | The 2021 Tahoe | Every 2021 vehicle | Behind it |
|---|---|---|---|
| Failed the emissions check | 4.1% | 1.9% | 2,957 |
| Failed the safety inspection | 0.81% | 1.5% | 2,963 |
| Air-bag warning lamp stayed lit | 0.30% | 0.19% | 2,963 |
| Miles driven a year | 12,831 | 10,343 | odometer at inspection |
| Average odometer | 67,270 | 54,681 | odometer at inspection |
New York’s emissions test on these model years is an on-board diagnostics check: it fails a car whose check-engine light is on or whose self-tests have not finished. First inspections only, so a car that failed and came back is counted once; private and special plates, not taxis, livery or commercial plates. A rate appears only where at least 200 inspections stand behind it. “Every 2021 vehicle” is every 2021 model-year car, SUV and pickup inspected in the same window, all makes. This is the state’s record of test results, not a reliability score by itself. Source: New York State Department of Motor Vehicles, Vehicle Inspections (data.ny.gov, Open NY terms).
Common questions about the 2021 Tahoe
Source: EPA, NHTSA and manufacturer press kitsDoes the 2021 Chevrolet Tahoe have any recalls?
NHTSA has posted 16 recall campaigns for the 2021 Chevrolet Tahoe, 1 of them rated critical. The most serious on file is 24V797000, covering Power Train. 1 of them was filed with no repair available at the time — NHTSA's file records what the manufacturer had in hand on the filing date, not what exists today. Check your own VIN at nhtsa.gov/recalls; a recall applies to specific build ranges, not every car.
How safe is the 2021 Chevrolet Tahoe?
NHTSA gave the 2021 Chevrolet Tahoe 4 stars overall in its New Car Assessment Program tests — 4-star frontal crash, 5-star side crash, 3-star rollover. WhichTrim also grades it F (44/100) on its recall record, which is a different question from crash protection.
What is the fuel economy of the 2021 Chevrolet Tahoe?
Across the 10 EPA-rated configurations of the 2021 Chevrolet Tahoe, the best EPA combined figure is 24 mpg. Figures are the EPA's own, per configuration, and every one is listed above.
What are the dimensions of the 2021 Chevrolet Tahoe?
Transport Canada measured it at 210.6 in long, 81.1 in wide (body, without mirrors), 75.6 in tall, on a 120.9 in wheelbase. Curb weight: 5,355–5,545 lb depending on configuration. Those are its measurements of the North American versions; every figure is in the table above.
What do owners complain about on the 2021 Chevrolet Tahoe?
Owners have filed 460 complaints with NHTSA about the 2021 Chevrolet Tahoe, most often about engine, fuel/propulsion system, power train. Of those, 9 involved a crash, 3 a fire, 9 reported injuries. Complaints are unverified owner reports, so treat the pattern as a signal and the individual report as an anecdote.
How clean is the 2021 Chevrolet Tahoe?
The EPA smog rating for the 2021 Chevrolet Tahoe runs 3 to 5 out of 10 across its configurations. That score covers tailpipe pollutants other than greenhouse gases, and it only compares vehicles within the same model year. It is certified for all fifty states, so it can be registered new anywhere in the U.S. Its configurations were certified to different standards — California LEV-III ULEV125, California LEV-III ULEV70, Federal Tier 3 Bin 125, Federal Tier 3 Bin 70 — which the table above lists per configuration.
Are there service bulletins for the 2021 Chevrolet Tahoe?
The manufacturer has filed 1477 service bulletins and related communications with NHTSA for the 2021 Chevrolet Tahoe, most often covering electrical system, engine, equipment. The most recent is dated 2026-10-05. A bulletin is not a recall: it is the repair procedure a manufacturer sends its dealers for a condition it knows about, and the work is not automatically paid for. It is still worth knowing — if the symptom matches, quoting the bulletin number at the service desk can save a diagnosis. The document numbers and summaries are listed above.
How does the 2021 Chevrolet Tahoe do at state inspection?
In New York’s inspection lanes over the 12 months to Oct 10, 2026, the 2021 Chevrolet Tahoe failed the emissions check on 4.1% of first inspections — higher than the 1.9% for every 2021 model-year vehicle inspected; and the safety inspection on 0.81% (every 2021 vehicle: 1.5%). The figures are New York State DMV’s own inspection records, first inspections only, and the table above sets each one against every vehicle of the same model year.
What we hold, and what an empty row means
Paid vehicle-history reports will not tell you the difference between “nothing happened to this car” and “we never received that record” — both of the big two say as much in their own help pages. Most of what is on this page comes from complete federal registers, so we can tell you which is which, row by row.
| Data | Held | Source | What it covers — or what empty means |
|---|---|---|---|
| Fuel economy & configurations | 10 configurations | EPA certification records | Every configuration the EPA certified for sale, with its own test figures. |
| Emission certificates | 10 configurations | EPA emission certificates | Smog rating, standard and the sales area that decides where the car can be sold new. |
| Recalls | 16 | NHTSA recall campaigns | A complete federal register: every campaign covering this model year, with severity and advisory flags. |
| Owner complaints | 460 | NHTSA complaint database | Also complete, but unverified: these are reports owners filed, not findings. Counts scale with how many were sold. |
| Crash ratings | 2 tested | NHTSA NCAP | Only the configurations NHTSA chose to crash-test, which is never all of them. |
| Service bulletins | 1477 | NHTSA manufacturer communications | Everything the manufacturer told its dealers about a defect or malfunction, short of a recall. |
| Investigations | 5 | NHTSA Office of Defects Investigation | Open and closed defect investigations, with the agency's own narrative. |
| Driver-assist crash reports | none | NHTSA Standing General Order 2021-01 | No report has been filed. Only entities named in the order report, and only crashes they hear of — so this is also what an unequipped car, or a manufacturer without telematics, looks like. |
| Specifications filed with NHTSA | 12 fields | NHTSA vPIC, decoded from VIN patterns | What the manufacturer filed under the federal VIN rule — a configuration, not the full trim ladder. |
| Measured dimensions | 7 fields | Transport Canada, Canadian Vehicle Specifications | Length, width, height, wheelbase, track and curb weight, measured on the North American versions. |
| Trims, pricing & equipment | none | Manufacturer press kit | We have not transcribed a press kit for this model year yet. This is our gap, not the manufacturer's — the one row here where an empty cell means we are behind. |
Rebuilt nightly; this page was generated 2026-10-26. Every figure above is traceable to the source named beside it, and the JSON for this page carries the same values with their identifiers.
Sources & method
Safety Signal starts every model-year at 100 and subtracts points per open NHTSA recall campaign by severity: critical 15 (fire risk, park-outside or do-not-drive advisories), high 8 (brakes, steering, airbags, loss of drive power, structure, battery), moderate 6, minor 3 (software, labels, lighting fixed by an update). The most serious recall counts in full and each further one counts 85% of the one before, because a vehicle sold in millions is recalled more often than a rare one without being more dangerous — and because a flat subtraction bottomed the scale out, scoring a vehicle with 22 recalls within a point of one with six. A ≥ 90, B ≥ 80, C ≥ 70, D ≥ 60, otherwise F. Read it as what it counts: recall campaigns on the federal record, weighted by severity. The damping reduces the sales bias by roughly 40% but does not remove it: like our complaint counts, this is not normalized by how many were sold, so a best-seller still scores somewhat worse than an obscure model with the same real risk. NHTSA crash ratings, do-not-drive and park-outside advisories, and the crash, fire, injury and death counts in owner complaints are reported separately on every page and never blended into the letter — a vehicle can hold five stars and a poor letter at once, and where that happens we say so rather than leave you to notice. Because the scale subtracts from a clean sheet, a model year too new to have been recalled, complained about or bulletined scores full marks on an empty record; we label those grades provisional rather than present them as earned.
EPA figures come from fueleconomy.gov vehicle records. Recalls, complaints, investigations and crash ratings come from NHTSA's public flat files, refreshed nightly.